Pump-coupling.



No. 841,707. PATBNTED JAN. 22, 1907.

' B. MURRAY.

PUMP COUPLING;

APPLIOATION IILED JA N;15 1906.

GUY B. MURRAY, NANKIN, OHIO.

PUMP-COUPLING.

Specification of Letters Patent Patented Jan. 22, 1907.

Application filed January 15, 1906. Serial No. 296,123.

To all whom, it may concern:

Be it known that I, GUY B. MURRAY, a citizen of the United States, residing at Nankin, in the county of Ashland and State of Ohio, have invented new and useful Improvements in Pump-Couplings, of which the following is a specification.

This invention is a pu1npcoupling; and it comprises a coupling-head which is rigidly connected to the pump pistonrod and is provided with means for alternately coupling said piston-rod to the windmill-rod and the pump-handle.

The obj eot of the invention is to provide a coupling which shall be simple in construcvtion and operation and without complicated parts to get out of order, and to this end it consists in a novel arrangement of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation showlng the application of the invention. Fig. 2 is an enlarged horizontal sectional view on the line 2 2 of Fig. 1. Fig. 3 is a front elevation of the coupling.

Referring specifically to the drawings, denotes the pump-head, from which rises the standard 11, having the usual guide-opening 12 for the pump piston-rod 13. The pumphandle 14 is connected to the lower end of the standard by a link 15.

The coupling-head comprises a casting 16, which is rigidly fastened to the piston-rod 13 by a bolt 17 or other suitable means, said casting being grooved, as at 18, to receive the piston-rod.

The casting has a front extension 19, which is formed with parallel vertical openings 20 and 21, respectively. The windmill-rod 22 extends through the opening 20, and the handle couplingrod 23 extends through the opening 21. At its lower end the coupling-rod 23 is connected by a link 24 with a handle 14.

The connection between the piston-rod 13 and the rods 22 and 23 is made by pins 25 and 26, respectively, which slide in holes 27 and 28, respectively, on opposite sides of the extension 19 and enter registering holes 29 and 30, respectively, in the rods 22 and 23. These pins are held in axial alinement by a yoke 31, which extends in front of the exten sion 19. One arm of this yoke is made fast to the pin 26 by a key 32 or other suitable means, and the other arm of the yoke is made fast to the pin 25 in a like manner. The yoke may be swung up or down, and when so swung it is forced to one side or the other relative to the extension 19 by oppositelyextending cam-shaped surfaces 33, formed on the extension, which surfaces are engaged by the arms of the yoke, respectively.

In the drawings the yoke is swung to its extreme upward position, whereby the pin 26 is withdrawn from the coupling-rod 23, leaving the latter free to slide in the opening 21. The pin 25, however, is extended into the opening 29 in the windmill-rod 22, whereby the latter rod is fastened to the couplinghead and thus coupled to the piston-rod 13, so that the pump will be operated by the Windmill. When the yoke is swung to its extreme lower position, it is forced to the left by the cam-surfaces, which reverses the movement of the pins and causes the pin 26 to enter the opening in the coupling-rod 23 and the pin 25 to withdraw from the windmill -rod 22. In this position of the pins the windmill-rod is disconnected from the coupling-head, and the coupling-rod 23 is lnade fast thereto and thus coupled to the piston-rod, so that the pump can be operated by the handle by reason of the link connection 24 between said handle and the coupling-rod.

The yoke is held in its upper or lower position by a spring-bolt or other suitable means 34 carried by the yoke and engaging holes 35 and 36, respectively, in the curved front surface 37 of the extension 19, said curve coinciding with the are described by the yoke during its movement from one position to the other. At the end of the cam-surfaces 33 are stop projections 38.

The advantages of the coupling herein described are manifold. It is simple in construction, easy to operate, and has no complicated parts to get out of order. It will work satisfactorily without the necessity of the difierent rods being exactly in line, and there is no strain on the shifting parts except during the act of changing connection. The length of the pins 25 and 26 is such that when changing'from handle to windmill connection, or vice versa, one pin enters the hole in the loose rod before the other is entirely withdrawn, thus making it impossible for the iston-rod to drop below the limit of its regu ar stroke, and thus damage valves.

I claim 1. The combination with a pump pistonrod, a pump-handle, and a windmill-rod, of a coupling-head secured to the piston-rod, and having parallel vertical openings through one of which openings the windmill-rod extends, a coupling-rod connected to the handle and extending through the other opening in the coupling-head, said coupling-rod and windmill-rod having openings, and the couplinghead having openings on opposite sides which register with the openings in the coupling rod and windmill rod, ins slidably mounted in the openings in t e couplinghead, and extensible alternately into the openings in the windmill-rod and the coupling-rod, a yoke connecting said pins, and means for shifting the yoke sidewise in either direction to actuate the pins.

2. The combination with a pump pistonrod, a pump-handle, and a windmill rod, of a coupling-head secured to the piston-rod, and having parallel vertical openings through one of which openings the Windmill-rod extends, a coupling-rod connected to the handle and extending through the other opening in the cou ling-head, said coupling-rod and windmil -rod having openings, and the couplinghead having openings on opposite sides which register with the openings in the coupling-rod and windmill-rod, pins slidably mounted in the openings in the couplinghead, and extensible alternately into the openings in the windmill-rod and the coupling-rod, a yoke connecting said pins, and cam-suriaces formed on opposite sides of the coupling-head, and engageable by the yoke for shifting it sidewise in either direction to actuate the pins.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUY B. MURRAY.

WVitnesses WV. B. HART, M. T. SCARBOROUGH. 

